While the vast array of smartphone options gives you a lot of choice on what millimetre-thick piece of plastic and glass you decide will dominate your life, it does lead to a lot of fragmentation for mobile gamers. With so many options which generally boil down to the Amazon family of devices, Android alternatives and Apple's beautiful walled garden, it's sometimes frustrating to find that you can't play with your friends who opted for another operating system. Thankfully, the developers of Riptide GP: Renegade [$2.99] have recently updated their flagship racing title with cross-platform online play on mobile, with the potential to later add console and PC players to the action, as well as a whole host of refinements that further improve the multiplayer elements to Renegade that we loved in our review back in August.